Our class C does not have a generator in the side compartment for that, but has a metal door screen across the middle of the door. It has a solid sheet metal piece behind the metal screen.
Because of this thread reminding me about venting where you carry a propane bottle, I just drilled some holes in that sheet metal behind the door screen. Thanks!
In the 5er we had an RVQ with a quick connect to the 5er's propane. Didn't get the adapter gizmo for the big propane tank in the MH, but instead we carry a 20 lb propane bottle in that gen compartment, upright. The RVQ still works as before with its hanger now on the side of the MH, and the hose adapted to go with the 20 lb bottle and its regulator.
I could go with the extend a stay and BBQ adapter for the big tank, which I looked into, but so far no need. The gen compartment can take the 20 lb bottle upright, but not a 30.
Good point about filling the bottles when you don't have a toad. We go to a gas station that has the big tank filler pump in with the gas pumps way over from where the bottle filler is. One or the other unless you like carrying a full bottle for some distance over to where the MH is at the pumps. Oh well, the RVQ steaks make it worth it! :)
